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db_checkpoint(8)
NAME
  db_checkpoint - Periodically checkpoint the security database log (Enhanced
  Security)

SYNOPSIS
  /usr/tcb/bin/db_checkpoint [-1v] [-h home] [-k bytes] [-L file] [-p min]

OPTIONS
  -1  Checkpoint the log once, and then exit.

  -h home
      Specify a home directory for the database. The correct directory for
      enhanced security is /var/tcb/files.

  -k kbytes
      Checkpoint the database at least as often as every kbytes of log file
      written.

  -l file
      Log the execution of the db_checkpoint utility to the specified file in
      the following format, where ### is the process ID, and the date is the
      time the utility starting running.

	   db_checkpoint: ### Wed Jun 15 01:23:45 EDT 1995

      This file is removed if the db_checkpoint utility exits gracefully.

  -p min
      Checkpoint the database at least every min minutes.

  -v  Write the time of each checkpoint to the standard output.

  At least one of the -1, -k and -p options must be specified.

DESCRIPTION
  A customized version of the Berkeley Database (Berkeley DB) is embedded in
  the operating system to provide high-performance database support for
  critical security files. The DB includes full transactional support and
  database recovery, using write-ahead logging and checkpointing to record
  changes.

  The db_checkpoint utility is a daemon process that monitors the database
  log and periodically checkpoints it. Since other database functions also
  cause checkpoint records to be written to the log, db_checkpoint is
  normally used as a one-time function to guarantee a checkpoint before
  archiving the database.

  The db_checkpoint utility utility attaches to one or more of the Berkeley
  DB shared memory regions. In order to avoid region corruption, it should
  always be given the chance to detach and exit gracefully.  To cause
  db_checkpoint to clean up after itself and exit, send it an interrupt
  signal (SIGINT).

  The db_checkpoint utility does not attempt to create the Berkeley DB shared
  memory regions if they do not already exist. The application which creates
  the region should be started first, and then, once the region is created,
  the db_checkpoint utility should be started.

RETURN VALUES
  The db_checkpoint utility exits 0 on success, and >0 if an error occurs.

ENVIRONMENT VARIABLES
  DB_HOME
      If the -h option is not specified and the environment variable DB_HOME
      is set, it is used as the path of the database home. The home directory
      for security is /var/tcb/files.

FILES
  /var/tcb/files/auth.db

  /var/tcb/files/dblogs/*

SEE ALSO
  Commands: db_archive(8), db_printlog(8), db_recover(8), db_stat(8),
  secconfig(8)

Index for Section 8

Alphabetical listing for D

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